And what is sadder is that the Comet has a lower chance of scoring a penetrating hit against a JP4 than the JP4's chance against the Comet when you take into account accuracy and unit size:
Comet chance of scoring penetrating hit against JP4: 37%
JP4 chance of scoring a penetrating hit against Comet: 51%
Situation does not improve with vet either as the JP4 gets actual befits from it while the Comet does not.
Then you factor in potential AI and utility from the comet and waow, still holds some value!